Rudi is growing up and seems to be morbidly attracted to girls. So Giulio, not without embarrassment, begins to address the topic of sex with his children. Rudi, however, wants to move from theory to practice and invites his friends home to play the "postman game". When the innkeeper catches Rudi kissing Alice, he goes back to his old ways. Meanwhile, Eva becomes jealous once she discovers the relationship.
